What is Universal Plug and Play? It is a protocol that allows network devices to talk to each other and it often runs on devices unless it is turned off. I have listed a few examples of devices that might have it enabled, which include such devices as home routers, printers, smart TVs, IP cameras, and home automation systems, but there could be many other types of devices that could have it turned on.

The first thing to check is your home router. How do you find out if your router is vulnerable? Rapid7 is a security research firm that has a free website-based tool that will check your router, available here http://upnp-check.rapid7.com/. Click the button “Scan My Router.” You do not have to install any software. It should take about 30 seconds to run.

If you want to check more than your router, there is a program on that page that you can download and run.

There is also a link to a page listing answers to frequently asked questions as well as a link to a more in-depth, technical explanation if you’re interested.